fix ushort_v concat for SSE < 4.1 - this fixes the division unit test
fix ushort_v concat for SSE < 4.1 - this fixes the division unit test

chr-engwer/Vc,VcDevel/Vc,chr-engwer/Vc,VcDevel/Vc,chr-engwer/Vc,VcDevel/Vc,VcDevel/Vc